Thill-coupling



(No Model.)

T. M. RICHARD-SON.

' WITNESSES: INVENTOR 6 gai ATTORNEYS UNITED STATES PATENT OFFICE.

THEODORE M. RICHARDSON, OF STOCKTON, MAINE, ASSIGNOR OF THREE- FOURTHS TO JAMES M. RUSSELL, OF BOSTON, MASSACHUSETTS.

THlLL-COUPLING.

SPECIFICATION forming part of Letters Patent No. 267,937, dated November 21, 1882. Application filed September 9, 1882. (No model.)

To all whom it may concern Be it known that I, '1. M. RICHARDSON, a citizen of the United States, and a resident of Stockton, in the county of Waldo and State of Maine, have inventeda new and valuable Improvement in Thill-Gouplings; and I do hereby declare that the followin g is a full, clear, and exact description of the construction and operationof the same,reference being bad to the annexed drawings, making a part of this specification, and to the letters and figures of reference marked thereon.

Figure 1 of the drawings is a vertical sectional view of my coupling, and Fig. 2 is a plan view of the same. a

This invention has relation to thill and pole couplings; and it consists in' the construction and novel arrangement of the spring rubber holder and rubber cushion, and of the lever-nut and rubber washer on opposite ends of the coupling-bolt, all as hereinafter set forth.

In the accompanying drawings, the letter a designates the axle-clip, carrying the shacklebody b, having the lateral perforated arms 0, between which is an interspace designed to receive the cylinder-shaped head d of the shaftiron e.- This head dis transversely perforated to engage a catch or projection on the side of the shackle or shackle-arm. When in engagement therewith the lever-nut is held firmly in position by the elastic action of the rubber' washer under the head of the bolt. Under the shaftiron is connected to the shaft a springholder, s, which is slotted longitudinally at a for the passage of the fastening-b01151), and is provided with a concave curved rear end portion, it, extending around under the cylinderhead 01 and upward behind the same, finally terminating in a horizontal flange or holdingspurs, as indicated at g. This rear portion, t,

of the spring-arm forms a holder for the rubu ber cushion 1", which is located in the concavity behind the coupling-bolt, its upper portion or top being engaged by the holding-projection q. The rubber cushion is by this spring-arm held firmly, but in an elastic manner, against the rear of the cylinder-head of the shaft-iron. The slotted arm of the spring-holder provides means whereby the rubber cushion can be drawn more closely against the cylinder-head, when this becomes necessary in consequence of the wearing away of the rubber cushion by the constant vibrations of the shaft. It is designed by holding the bolt and cylinder-head in the manner hereinbefore described to avoid looseness and rattling.

A packing of rubber or the like has been interposed between the head of the bolt and the thill-eye, and a lock-nut has been used at the point of the bolt in this connection; but a construction of this character is not broadly claimed herein.

Having described this invention, what I claim, and desire to secure by Letters Patent,

1. A thill or pole coupling having the adjustable spring rubber holder 8, attached to the shaft, and extending around up behind the cylinder-head to receive the rubber cushion, which engages said head, substantially as specified.

' 2. A thill or pole coupling having the ad j ustable spring rubber holders, attached to the shaft, and curved upward at its rear end,finally terminating in a horizontal flange or spur projection, q, substantially as specified.

3. A thill or pole coupling having the rubber washer is under the head of the couplingbolt g, the lever-nut l'on the end of the same, formed with an end stop or bearing, m, and a catch or projection on the shackle or shacklearm, substantially as specified.

In testimony that I claim the above I have hereunto subscribed my name in the presence of twowitnesses. v

THEODORE MANSFIELD RICHARDSON.

Witnesses:

WILLIAM B. AMES, SIMEON B. MERRITHEN. 

